// const state = {
//   visitedViews: [],
//   cachedViews: [],
//   iframeViews: []
// }

// const mutations = {
//   ADD_IFRAME_VIEW: (state, view) => {
//     if (state.iframeViews.some(v => v.path === view.path)) return
//     state.iframeViews.push(
//       Object.assign({}, view, {
//         title: view.meta.title || 'no-name'
//       })
//     )
//   },
//   ADD_VISITED_VIEW: (state, view) => {
//     if (state.visitedViews.some(v => v.path === view.path)) return
//     state.visitedViews.push(
//       Object.assign({}, view, {
//         title: view.meta.title || 'no-name'
//       })
//     )
//   },
//   ADD_CACHED_VIEW: (state, view) => {
//     if (state.cachedViews.includes(view.name)) return
//     if (view.meta && !view.meta.noCache) {
//       state.cachedViews.push(view.name)
//     }
//   },
//   DEL_VISITED_VIEW: (state, view) => {
//     for (const [i, v] of state.visitedViews.entries()) {
//       if (v.path === view.path) {
//         state.visitedViews.splice(i, 1)
//         break
//       }
//     }
//     state.iframeViews = state.iframeViews.filter(item => item.path !== view.path)
//   },
//   DEL_IFRAME_VIEW: (state, view) => {
//     state.iframeViews = state.iframeViews.filter(item => item.path !== view.path)
//   },
//   DEL_CACHED_VIEW: (state, view) => {
//     const index = state.cachedViews.indexOf(view.name)
//     index > -1 && state.cachedViews.splice(index, 1)
//   },

//   DEL_OTHERS_VISITED_VIEWS: (state, view) => {
//     state.visitedViews = state.visitedViews.filter(v => {
//       return v.meta.affix || v.path === view.path
//     })
//     state.iframeViews = state.iframeViews.filter(item => item.path === view.path)
//   },
//   DEL_OTHERS_CACHED_VIEWS: (state, view) => {
//     const index = state.cachedViews.indexOf(view.name)
//     if (index > -1) {
//       state.cachedViews = state.cachedViews.slice(index, index + 1)
//     } else {
//       state.cachedViews = []
//     }
//   },
//   DEL_ALL_VISITED_VIEWS: state => {
//     // keep affix tags
//     const affixTags = state.visitedViews.filter(tag => tag.meta.affix)
//     state.visitedViews = affixTags
//     state.iframeViews = []
//   },
//   DEL_ALL_CACHED_VIEWS: state => {
//     state.cachedViews = []
//   },
//   UPDATE_VISITED_VIEW: (state, view) => {
//     for (let v of state.visitedViews) {
//       if (v.path === view.path) {
//         v = Object.assign(v, view)
//         break
//       }
//     }
//   },
//   DEL_RIGHT_VIEWS: (state, view) => {
//     const index = state.visitedViews.findIndex(v => v.path === view.path)
//     if (index === -1) {
//       return
//     }
//     state.visitedViews = state.visitedViews.filter((item, idx) => {
//       if (idx <= index || (item.meta && item.meta.affix)) {
//         return true
//       }
//       const i = state.cachedViews.indexOf(item.name)
//       if (i > -1) {
//         state.cachedViews.splice(i, 1)
//       }
//       if(item.meta.link) {
//         const fi = state.iframeViews.findIndex(v => v.path === item.path)
//         state.iframeViews.splice(fi, 1)
//       }
//       return false
//     })
//   },
//   DEL_LEFT_VIEWS: (state, view) => {
//     const index = state.visitedViews.findIndex(v => v.path === view.path)
//     if (index === -1) {
//       return
//     }
//     state.visitedViews = state.visitedViews.filter((item, idx) => {
//       if (idx >= index || (item.meta && item.meta.affix)) {
//         return true
//       }
//       const i = state.cachedViews.indexOf(item.name)
//       if (i > -1) {
//         state.cachedViews.splice(i, 1)
//       }
//       if(item.meta.link) {
//         const fi = state.iframeViews.findIndex(v => v.path === item.path)
//         state.iframeViews.splice(fi, 1)
//       }
//       return false
//     })
//   }
// }

// const actions = {
//   addView({ dispatch }, view) {
//     dispatch('addVisitedView', view)
//     dispatch('addCachedView', view)
//   },
//   addIframeView({ commit }, view) {
//     commit('ADD_IFRAME_VIEW', view)
//   },
//   addVisitedView({ commit }, view) {
//     commit('ADD_VISITED_VIEW', view)
//   },
//   addCachedView({ commit }, view) {
//     commit('ADD_CACHED_VIEW', view)
//   },
//   delView({ dispatch, state }, view) {
//     return new Promise(resolve => {
//       dispatch('delVisitedView', view)
//       dispatch('delCachedView', view)
//       resolve({
//         visitedViews: [...state.visitedViews],
//         cachedViews: [...state.cachedViews]
//       })
//     })
//   },
//   delVisitedView({ commit, state }, view) {
//     return new Promise(resolve => {
//       commit('DEL_VISITED_VIEW', view)
//       resolve([...state.visitedViews])
//     })
//   },
//   delIframeView({ commit, state }, view) {
//     return new Promise(resolve => {
//       commit('DEL_IFRAME_VIEW', view)
//       resolve([...state.iframeViews])
//     })
//   },
//   delCachedView({ commit, state }, view) {
//     return new Promise(resolve => {
//       commit('DEL_CACHED_VIEW', view)
//       resolve([...state.cachedViews])
//     })
//   },
//   delOthersViews({ dispatch, state }, view) {
//     return new Promise(resolve => {
//       dispatch('delOthersVisitedViews', view)
//       dispatch('delOthersCachedViews', view)
//       resolve({
//         visitedViews: [...state.visitedViews],
//         cachedViews: [...state.cachedViews]
//       })
//     })
//   },
//   delOthersVisitedViews({ commit, state }, view) {
//     return new Promise(resolve => {
//       commit('DEL_OTHERS_VISITED_VIEWS', view)
//       resolve([...state.visitedViews])
//     })
//   },
//   delOthersCachedViews({ commit, state }, view) {
//     return new Promise(resolve => {
//       commit('DEL_OTHERS_CACHED_VIEWS', view)
//       resolve([...state.cachedViews])
//     })
//   },
//   delAllViews({ dispatch, state }, view) {
//     return new Promise(resolve => {
//       dispatch('delAllVisitedViews', view)
//       dispatch('delAllCachedViews', view)
//       resolve({
//         visitedViews: [...state.visitedViews],
//         cachedViews: [...state.cachedViews]
//       })
//     })
//   },
//   delAllVisitedViews({ commit, state }) {
//     return new Promise(resolve => {
//       commit('DEL_ALL_VISITED_VIEWS')
//       resolve([...state.visitedViews])
//     })
//   },
//   delAllCachedViews({ commit, state }) {
//     return new Promise(resolve => {
//       commit('DEL_ALL_CACHED_VIEWS')
//       resolve([...state.cachedViews])
//     })
//   },
//   updateVisitedView({ commit }, view) {
//     commit('UPDATE_VISITED_VIEW', view)
//   },
//   delRightTags({ commit }, view) {
//     return new Promise(resolve => {
//       commit('DEL_RIGHT_VIEWS', view)
//       resolve([...state.visitedViews])
//     })
//   },
//   delLeftTags({ commit }, view) {
//     return new Promise(resolve => {
//       commit('DEL_LEFT_VIEWS', view)
//       resolve([...state.visitedViews])
//     })
//   },
// }

// export default {
//   namespaced: true,
//   state,
//   mutations,
//   actions
// }
